Milling machine



Dec. 8, 1931. E. J. KEARNEY 1,335,782

MILLING MACHINE Filed March 8, 1928 2 Sheets-Sheet l INV ENTOR y www ATTORNEY E. J. KEARNEY MILLING MACHINE Dec. 8,g 1931.

Filed March 8, 1928 2 Sheets-Sheet 2 IyVENTOR d QTDORNEY Patented Een. 1931i EDWARD J. KEARNEY, or WAUWA'rosA, "wIscoN'srN, AssIGNoR 'ro ,KEARNEY a francamconronamronor wnsmnrms'wiscousrn f MILLING MAGINE Application filed March s, 192s( se'rii No. 260,106.

This invention relates to milling machine structure, and more particularly toa structure providing convenience of adjustment together with great rigidity in certain types of milling machines. y

A purpose of the invention is to provide an improved milling machine in which the work table travels in a horizontal path and relative vertical adjustment of thefwork and` tool is io obtained by moving the tool spindle. 1

A further purpose is to provide insuch a machine a plurality of tool spindles larranged with the individual supporting structures on opposite sides of the work table,

and each independently adjustable in vertical paths.

Another purpose is tol provide in such two spindle machine improved means whereby the independent spindle supporting structures at 2o times may cooperate for the mutual support of both spindles or both structures mayfco operate to support either spindle. j Another purpose is to improve the overarm structure of such two spindle machines, and to provide means whereby the overarm structure individual to the diii'erent spindles may cooperate for support of either or both Vspindles and for establishing a unitary structure having convenience for spindle adjust'- nient combined with great rigidity.

Another purpose is generally` to improve and simplify the construction and operation ot milling machines, and stillotherobjects will be apparent from this disclosure.

construction, arrangement and combination of partsas herein illustrated and described and in such modiiications thereof'as lmay be equivalent ot the mechanism claimed.

ln the drawings the sameparts have the same `reference characters throughout.`

Fig. 1 is a side elevation of 'a twospindle.

section along line 3-3 of Fig.

Fig. 4l is a partial section taken along line` Jl--l of Fig. 1.

lhe invention consistscjin the particular Fig."5 is a partial section taken along line i Fig. 6 is a partial section taken along line 6-6 of Fig. 1.

The machine comprises a stationary base lfupon which is slidably guided a reciprocable work table 2,7and reciprocable spindle supporting heads y3 and farranofed on opposite sides of the table and movable in mutually parallel paths transverse to the table movement. Thetable 2- may be traversed `by the means of a screw 6 journaled in the table but fixed against axial movement relativetheretoa-nd engaging a nut 7 fixed in bed 1, the screw being provided-With a squared end 8 for a suitable crank,not' shown. j The head 3 may be traversed by the means of a screw 9 journaled in the bed, but prevented from axial movement andfengagin'g a lnut 10 fixedL in the head, the screw having a squared end'11` for a Isuitable crank, `not shown. 1 i

j The head 3 has a spindle carrier or member 12 yguided forvertical adjustment between wo upright portionsrl3, 14,-whicli are connected bya bottom portion 154 and a top portion 16. Member 12 carries a rotatable tool spindle 17,v and a plurality ofrround overarms 18, 19, each axially adjustable through carrier bores in which they are fitted. vThe carrier 12 may be -vertically adjusted by the means of a shaft 20, connected with a vertical screw 21 by the meansof bevel gears 22-23-, the screw? being klixed againstaxial movement and engaging a'nutportion24 fixed with car- .rier-12i. VShaft 20 has a squared end 25 for a crank not shown. I l

Head 3 may be clamped in any position of its'-adjustmentvby the means ofjbolts engaging suitable T slots V26, 27, inbed-l.l kOne pair of bolts 28,' 29, 'are offordinary constructionWith'nuts 30, 30.' Another pairiof bolts are of. a construction suitable to permit thenuts 3 1, 31, to stand, at the side'of the head, thel construction of one of such bolts 32 being shown in Figs. 1 and 6and the other being exactly similar.` As seen in Fig. 6 vbolt 32 4has a T head`34 sliding in'T slot 26 and a transverse boreV 35 at its upper shank end, through which a rod 36 extends outside lon CSU

head 3 and threadedly engages nut 31. Rod 36 has an enlarged head 37, slidably fitting a bore in head 3, and having a conical portion 38 engaging a complementary conical socket 39 in the bore 35. A sleeve 40 is slidably fitted in a suitable bore in the head -3 and has` a bore 41 in which rod 36 is slidably fitted, the sleeve having a conical end 42 engaging a camplement'ary conical socket 43 in thefbore 35. Sleeve A'and rod 36 are prevented from turning-by ya pin 44 engaging the head 3. The conical portions of rod 36 and sleeve 4() are forced toward one anotherl by suitably turning nut 3.1, forming oppositely disposed wedges tending to lift bolt vbolt 32, engages the T slot before the conical portions seat in the sockets, thereby clamping thehead 3. v

The construction whereby nut 31o may also clamp the head 4 is exactly simil-ar to that justl described for clamping the head from nut31. Y

The carrier 12 may bevclamped in any position of its vertical adjustment by the means of nuts 45,46,threaded,0n T bolts 47-43which engage T slots 4 9 and50 in the head3, thebolts bei'ngsl-idably fitted in suitableA bores .inI t-hecarrier, and the head 3 having slots 5 1, 52, permitting vertical movement.

VEach'of arms. 18, 19, Vmay bei clamped in any position of their adjustment in their carrier bores, there being a clamp member 53 s-lidable in a `suitable socket in tnecarrier and having portions 54, 55, arranged to contact and clamp the'arms simultaneously whenA the clamp member is suitably-moved by the means of a bolt 56 and a nut 57. A spring 58 is arranged, to free the' clamp when the nut 57is loosened. f

Head 4 is of a construction exactly similar tov head 3, there'being a screw 59 arranged for head adjustment similarly to previously described screw 9, a spindle carrier 60 similar toy carrierY 12 and. similarly provided with a rotatable tool spindle 61 and overa1 ms.62,63,V a shaft 64 and vertical screw`65 arranged for vertical adjustment of carriersimi-lar to'bolt 28, clamp means for carrier 'Y 60 includingv bolts 68, 69, similar to bolts 47-43, and clampfmeans for overarms 62, 63, including; a' clamp member- 70,-for simultaneously clamping the .armsl and similar to clampmember53.

The spindles 17-61, are each provided y with suitable mechanism for spindle rotation andisuita-ble power feed mechanism is used for movement of table screw 6, but since spindle'and feed drive mechanism are well known in aA great Variety and form no part ofthe present invention they are not shown.

Either or both sets of overarms may be provided with pendants such as 71 and 72, Fig. 1, such pendants being provided with slotted bores such as 73 and 74, Fig. 4, slidably fitted on the overarms which may be contracted to rigidly clamp the pendant on the overarms, as for instance by the means of a bolt 75 and nut 76. Such pendants are also provided witha bearing or bore such Vas 77 in exact axial alignment with the spindle associated with the overarms upon which Vthe pendant is clamped, whereby to exactly align and to-` support an arbor such as arbor 78.

ln, the drawings, only spindle 61 is shown with an arbor; the other spindle 17 illustrates a cutter 79` directly fixed on the spindie, but whatever maybe the nature of the tools used, the rigidity of the spindle supportiijig structureis greatly increased by providing vfor mutual support of the one head from the other. This is accomplished by providinoeach pair of overarms with harness or tie membersy such as 80-81, Figs. 1 and 3.

In the present'instance such members are similar andtherefore only the member 80 will *ber described. A body portion isprovided with bores as 82 and 83 slidably fitted to the over-arm and slotted as at 84 for contraction by the means of a screw S5 for clamping the body portions rigidly on the overarm. Other portions fixed with the body l.port-ion are provided with slots as 86 and 87jaclapted to receive bolts 88-89 which engage with the other harness member. The bolt slots of the two members are arranged to permit vertical adjustment of either carrier 12- or 60 when the bolts 88 and S9 are loosened, but when bolts 88-39 are clamped in any of' the various positions of relative adjustment the different sets of overarms are rigidly clampedtogether. By then clamping the overarms in the carriers, the carriers i1 are also .rigidly clamped together, and by then c-lampingvthe carriers in the heads and the Vheads on the base, the parts all cooperate to providea rigid unitary support for both spindles. y Vlhat' is claimed is `l; A, milling machine comprising a reciprocable work table, ka plurality of tool supporting heads respectively on opposite sides thereof', a plurality of rotatable spindles respectively carried by the different heads, a carriery supporting one of said spindles for vertical adjustment,` an overarm supported from said carrier in fixed spacing from the last mentioned spindle, and means for rigidly securing said overarm both with said carrier and with the head which carries the other spindle, said means including different portions one of which isfixed with one of said heads` and the other of which is associated sitions of vertical movement of said other portion.

2. A milling machine comprising a reciprocable Work table, a, plurality of tool supporting heads respectively on opposite sides thereoli, a plurality ot rotatable tool spindles espectively carried by the different heads,

a carrier supporting one of said spindles ior vertical ailjustment, an overarm device supjmrted from said carrier in fixed spacing from the last mentioned spindle tor vertical adjustment therewith and V:for horizontal adjustment in a. direction transverse tothe path of table movement, an arbor lixed with last 'entioned spindle to project therel `,dant lined with said overarnl device and proif'iding a bearing for said arbor, said ove!l said bear.. ig in axial alignment With said last mentioned spindle during said horizontal njustment, and means 'for rigidly securing said overarm device boni with said carrier and with the head which carries the other spindle, said means including different portions one of which is lined with the last mentioned head and the other ot' vmich is associated With said over-arm device and vertically movable with said carrier, said. portions being adapted to be rigidly lixed together in various positions of the-vertical move-` ment ci said other portion.

2l. ln a milling;` machine having a'reciprocable Work table and tool supporting heads respectively on opposite sides 'hereoieach ol said heads having a vertically adjustable 'ndle carrier, the combir ation oie. overarms respectively vertically adjustable with the different carriers, and means to ri-gidly secure the one overarm with the other in dit'- 'ierent positions of relative vertical carrier adjustment.

Ll. A milling machine comprising a reciprocable work table, a plurality of tool. sup-' poi-ing heads respectively on opposite table sides, each of' said heads having a vertically adjustable spindle carrier, each of said carriers having an overarm vertically znljust-` able therevvitln a harness device having portions respectively fined with the dille/rent overarms, and means for clamping thev one ol said portions With the other in different positions of relative adjustment of saidcarriers.

5. A milling` machine comprising a. reciprocable Work support, a plurality of upstanding heads respectively on opposite sides thereof, a plurality of vertically movable spindle carriers respectively associated With the different heads, a. plurality of overarm devices respectively vertically movable With the diilerent carriers and each including tvvo overarms, a harness device including dilerm device being adapted to restrain nature.

ent portions respectively engaging both the overal-ms of the different overarm devices, and means for rigidly fixing the one portion of said harness device With the other.

`6. A milling machine comprising a reciprocable Work support, a pluralityoftool supporting` heads respectively on dilerent sides'thereof, a plurality oli independently vertically adjustable spindle carrier units respectively associated with the dierent heads and each including a plurality of overarms, and a harness device including means for rigidly securing the overarms of the. Yone unit with the overarms of the other unit in diierent positions ol relative unit adjustment. Y i

7. A milling machine comprising a reciproeable work table, a plurality of tool supporting headsrespectively on opposite sides thereof, one of said heads being bodily` adjustable in aA direction transverse tothe table path, a plurality of independently vertically'adjustable spindle carriers respectively associated With the different heads, a plurality of overarms respectively vertically adjustable with the different spindle carriers, one et' said overarms being independently adjustable in a direction parallel with the path of movement of said adjustable head, and harness means for fixing adjacent ends ot' said overarms together in various positions of carrier and head adjustment.

8. ln a milling machine having a. reciprocable Work table and tool supporting heads respectively on opposite sides of said table,

each of saidv heads having a vertically adjustable spindle carr1er, the'comblnatlon of ya plurality of overarm devices respectively 'during horizontal movement thereof to restrain said portions in complementary paths ot" horizontal movement whereby to facilitate said `tilting of the portions together,

vIn `Witness whereof I hereto affix my sig-l f EDWARD J. imam-inv, 

